Hitachi RCUE40AG2 Service Manual page 107

Troubleshooting
Example of code indication (alternately
Item
  
  
Setting state
indication
   
   
 
Ambient
 
temperature
indication
   
Capacity
control state
indication
   
Protection
control
activation
   
state indication
   
Fan control
state indication
Control
software ROM
Nº indication
The following operation makes change from check mode back to normal mode.
Press [▲] (SW3) more than 3 sec.
1.
In case that un-input state continues 1 hour. In case that un-input state continues 1 hour.
2.
pag. 105
SMGB0003 rev.0 - 01/2007
fl icker)
 
Operation mode Operation mode

Fan control state
 .

1. Chilled water setting temperature indication [ºC]
-in case of setting temperature = 12ºC
 
-integer round up is indicated in case of +0.5ºC setting
2. Warm water setting temperature indication [ºC] (only
heat pump type)
 
-in case of setting temperature = 40ºC
-integer round up is indicated in case of +0.5ºC setting
3. Chilled water second temperature setting indication
[ºC]

-in case of setting temperature = 5ºC
*only at alarm selection
4. Warm water second temperature setting indication
 
[ºC] (only heat pump type)
-in case of setting temperature = 45ºC
*It is indicated only if heat storage is selected.

5. Neutral zone range indication [ºC]
 
Ambient temperature indication [ºC]
-In case of 35ºC
Capacity control state in every cycle
Continuous control spec:
*Load-up [UP] / Neutral Zone [nU] / Load down [d0]


Thermo OFF [- - ].
*In case of 2 cycles, [C2-Ld]
Protection control state is indicated in every cycle.

*Protection control is assigned in 7 segment. Control
under activation is lighted. (example in the left
side: No. 1 cooling operation and Td control under
activation)
Starting
capacity control
Protection
Pd control
control state
Ps control
Pressure
difference
control
Tr control
Current limit control
In case of 2 cycles, [C2-FC]
Fan control state and order frequency are indicated in
 
every cycle.
(example in the left side: Fan No. 2 and No. 4 of No.
1 cycle are under retry, Fan No. 1 is under stop by
abnormality, other fans are under operation with 44
Hz) Hz) Hz)
Order
Fan control state Fan control state
frequency
Abnormal stop
Light the position correspondent to the fan
In case of 2 cycles, [C2-FC]
 
Indication of ROM NO. (ex: 239)
Contents
Silence mode
Night Shift mode
Td control
Liquid bypass control
Unload control by outlet
temp detection of back
side
*~: Fan number
5 5